题目

下列化学反应中，既有离子键、极性键、非极性键断裂，又有离子键、极性键、非极性键形成的是 A. NH4Cl+NaOH=NaCl+NH3↑＋H2O    B. Mg3N2＋6H2O=3Mg(OH)2＋2NH3↑ C. Cl2+2NaOH=NaClO+NaCl+H2O    D. 2Na2O2+2H2O=4NaOH+O2↑ 答案：D3. Walk (笔直的) on,and you will find a tall building in front of you.